Spelunky currently holds a 89 on metacritic. This could fluctuate up or down, but probably stay within 5 points of that score.
Polygon-100
Eurogamer-100
Destructiod-95
IGN-90
Teamxbox-90
Gameinformer-80
Gamesbeat-70(only reason they gave a 70 is because of how difficult it gets)
I'm quite suprised at how well recieved this game is. I wasn't thinking much of it before, but I'll definitely give the trial a shot.